Dual Mode DisplayPort Repeater

PS8311 is Parade’s second-generation DisplayPortTM repeater.  Similar in function to the field-proven PS8121ED device, the PS8311 is a 1-to-1 DisplayPort Repeater, or re-driver, designed to be used in a DisplayPort Source device. It supports DisplayPort Link Training by utilizing AUX Channel interception, or “snooping”, a concept first introduced by Parade Technologies with a patent pending.

The PS8311 includes a new automatic input equalizer function, an integrated multiplexer for the HDMITM/DVI DDC signal and DisplayPort AUX channel, and a new automatic power management circuitry. An I2C input is provided for optional use for other device power management and control functions.

PS8311 Block

Key Features

  • Fully compliant to the VESA® DisplayPort 1.1a Specification
  • Supports 1, 2, or 4 lane operation at 1.62 or 2.7 Gbps
  • Serves as a repeater or re-driver within a DisplayPort Dual-mode or Multi-mode Source device or docking station
  • Removes PCB signal loss and restores signal quality at the DisplayPort output receptacle
  • Transparent link training operation through field-proven AUX channel snooping, no software support neede
  • Automatic input equalizer adjustment prevents input overdriving by input Source device responding to Link Training settings
  • Automatic and Source-initiated power management control
  • Integrated DDC / AUX channel mux supports Multi-mode or Dual-mode configurations, eliminates external circuitry
  • Single 3.3 V power supply
  • 7x7mm 48-pin QFN RoHS Package
  • 0°C to 85°C Operating Temperature Range
  • ESD: Human Body Mode at 8 kV


  • PC Desktop and Notebook Motherboards
  • Docking Stations
  • Graphics Cards